Discharge after hysterectomy

Hi! I am 8 weeks post op da vinci hysterectomy and am worried. At my 6 week check up my doc said she needed to put silver nitrate on the cuff. She said it was a small place and I would be fine in a week. The last few days I have had a pinkish brown discharge again. Is this normal? I assumed I would never have any more after she closed it all up. Do I need to call her? Also I suffered constipation for the first time at 7 weeks post op. That was very painful and lasted for 3 days. Still feel pressure when I urinAte. Is that normal? I had a much easier first six weeks than I have had the last two. Please let me know I am not freaking out for no reason! Thanks!!!